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  Asked: May 27 2008   3:17 AM GMT
  Asked by: Abccomputer

Exchange 550 NDR You are not allowed


Exchange 2003, Non-Delivery Reports, Outgoing email, Exchange error messages, NDR, Account Lockout, Event ID 539

I'm gettng NDRs for only a handful of accounts when sending email. It does not matter which domain is being emailed. In other words, all outgoing (non-local) email gets the following NDR

Your message did not reach some or all of the intended recipients.

Subject: Account Lockout (Event ID: 539) Alert on SERVER
Sent: 5/5/2008 12:24 PM

The following recipient(s) could not be reached:

sales@XXXXXX.com on 5/5/2008 12:24 PM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<XXXXXXXX.org #5.5.0 smtp;550 you are not allowed to send mail to <sales@XXXXXX.com>>

Other accounts have no problem emailing the exact same user account.

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Last Answered: May 27 2008  7:34 AM GMT  by Alessandro.panzetta




Hello Abccomputer,
I think that the problem is related to the user account itself; indeed if you read :
Subject: Account Lockout this tells you that the username is locked and must be unlocked by an Administrator.

Bye
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Mrdenny  |   May 27 2008  7:47AM GMT

I agree. It appears that some of your users have had thier email addresses specifically blocked by the admin on the receiving domain. You’ll want to contact that domain and have them remove the lockout.

 

Abccomputer  |   May 27 2008  3:18PM GMT

The only problem I have with that the account is blocked by the receiving domain is I own the mail server for one of the receiving domains, and the email address is not blocked. The user account is not locked as I can logon to any computer with the logon (the administrator account is one of them having issues).,

 

Labnuke99  |   May 28 2008  3:57AM GMT

Check to see if the user has some type of rule or anti-spam software that rejects particular senders through a blacklist.